ATmega32A Datasheet - Sunrom Technologies

ATmega32A26.5 Page SizeTable 26-5. No. of Words in a Page and no. of Pages in the FlashFlash Size Page Size PCWORD No. of Pages PCPAGE PCMSB16K words (32Kbytes) 64 words PC[5:0] 256 PC[13:6] 1326.6 Parallel Programming Parameters, Pin Mapping, and CommandsThis section describes how to parallel program and verify Flash Program memory, EEPROMData memory, Memory Lock bits, and Fuse bits in the ATmega32A. Pulses are assumed to be atleast 250 ns unless otherwise noted.26.6.1 Signal NamesTable 26-6.No. of Words in a Page and no. of Pages in the EEPROMEEPROM Size Page Size PCWORD No. of Pages PCPAGE EEAMSB1024bytes 4bytes EEA[1:0] 256 EEA[9:2] 9In this section, some pins of the ATmega32A are referenced by signal names describing theirfunctionality during parallel programming, see Figure 26-1 and Table 26-7. Pins not described inthe following table are referenced by pin names.The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.The bit coding is shown in Table 26-9.When pulsing WR or OE, the command loaded determines the action executed. The differentCommands are shown in Table 26-10.Figure 26-1.Parallel Programming+5VRDY/BSYOEPD1PD2VCC+5VWRPD3AVCCBS1XA0PD4PD5PB7 - PB0DATAXA1PD6PAGELPD7+12 VRESETBS2PA0XTAL1GND8155C–AVR–02/11270